#include <ts/ts.h>

int
CB_Read_Request_Body_Hook(TSCont contp, TSEvent event, void* data) {


  ink_assert(event == TS_EVENT_HTTP_REQUEST_BUFFER_COMPLETE);


  auto txnp = reinterpret_cast<TSHttpTxn>(data);


  TSIOBufferReader post_buffer_reader = TSHttpTxnPostBufferReaderGet(txnp);


  int64_t read_avail                  = TSIOBufferReaderAvail(post_buffer_reader);


  if (read_avail > 0) {


    char *body_bytes = reinterpret_cast<char *>(TSmalloc(sizeof(char) * read_avail));


    int64_t consumed      = 0;


    TSIOBufferBlock block = TSIOBufferReaderStart(post_buffer_reader);


    while (block != NULL) {


      int64_t data_len        = 0;


      const char *block_bytes = TSIOBufferBlockReadStart(block, post_buffer_reader, &data_len);


      memcpy(body_bytes + consumed, block_bytes, data_len);


      consumed += data_len;


      block = TSIOBufferBlockNext(block);


    }


    // Now do something with body_bytes which contains the contents of the


    // request's body.


  }


  // Remember to free the TSIOBufferReader.


  TSIOBufferReaderFree(post_buffer_reader);


  TSHttpTxnReenable(txnp);


  return 0;
}